PRIME Observation Log 2025/04/15

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Raw Log (Time is in SA time)
Ramp Log (Time is in UT)
CCMain Error Log (Time is in SA time)
Observation Log (Time is in UT)

Date: 2025/04/15
Local observer: Seiya Nakayama, Ryo Ogawa
Remote observer:
Weather: clear
Comment:
Detector Temperature: 113.99999 +- 0.00057 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:37:22
Morning 06:36:16
Science Observation
(Sun altitude < -10°)
Start 18:58:49
End 06:14:46
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 23:01:04
End 06:14:46


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 06:05:45 11:15:56 0.541
GB Time 02:51:56 07:13:42 0.396
Non-GB Time 03:13:48 04:02:14 0.800


Institute Statistics
- ALLSKY time is equally distributed to each institute
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
GB 1720 01:21:59 02:51:56 0.477
SAAO 483 00:23:01 00:48:27 0.475
OU 483 00:23:01 00:48:27 0.475
NASA 483 00:23:01 00:48:27 0.475
ABC 483 00:23:01 00:48:27 0.475


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
Bulge 1720 01:21:59 02:51:56 0.477
all_sky_grid 1932 01:32:05 03:13:48 0.475


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
GB112_dither OH 4 00:00:11 00:00:41 0.276
field13667_test 16 00:00:45 00:03:34 0.214
field13668_test 76 00:03:37 00:14:56 0.243
field13668 40 00:01:54 00:03:50 0.497
field13669 40 00:01:54 00:03:50 0.497
field13670 40 00:01:54 00:03:50 0.497
field13671 40 00:01:54 00:03:50 0.497
field13672 40 00:01:54 00:03:50 0.497
field13673 40 00:01:54 00:03:47 0.503
field13674 40 00:01:54 00:03:47 0.503
field13675 40 00:01:54 00:03:47 0.503
field13676 40 00:01:54 00:03:47 0.503
field13677 40 00:01:54 00:03:47 0.503
field13678 40 00:01:54 00:03:47 0.503
field13679 40 00:01:54 00:03:47 0.503
field13680 40 00:01:54 00:03:47 0.503
field13681 40 00:01:54 00:03:47 0.503
field13682 40 00:01:54 00:03:47 0.503
field13683 40 00:01:54 00:03:47 0.503
field13684 40 00:01:54 00:03:47 0.503
field13685 40 00:01:54 00:03:47 0.503
field13686 40 00:01:54 00:03:47 0.503
field13687 40 00:01:54 00:03:47 0.503
field13688 40 00:01:54 00:03:47 0.503
field13689 40 00:01:54 00:03:47 0.503
field13690 40 00:01:54 00:03:55 0.485
field13691 40 00:01:54 00:03:50 0.497
field13692 40 00:01:54 00:03:50 0.497
field13693 40 00:01:54 00:03:50 0.497
field13694 40 00:01:54 00:03:50 0.497
field13695 40 00:01:54 00:03:47 0.503
field13696 40 00:01:54 00:03:47 0.503
field13697 40 00:01:54 00:03:47 0.503
field13698 40 00:01:54 00:03:47 0.503
field13699 40 00:01:54 00:03:47 0.503
field13700 40 00:01:54 00:03:47 0.503
field13701 40 00:01:54 00:03:47 0.503
field13702 40 00:01:54 00:03:47 0.503
field13703 40 00:01:54 00:03:47 0.503
field13704 40 00:01:54 00:03:47 0.503
field13705 40 00:01:54 00:03:47 0.503
field13706 40 00:01:54 00:03:47 0.503
field13707 40 00:01:54 00:03:47 0.503
field13708 40 00:01:54 00:03:47 0.503
field13709 40 00:01:54 00:03:47 0.503
field13710 40 00:01:54 00:03:50 0.497
field13711 40 00:01:54 00:03:47 0.503
field13712 40 00:01:54 00:03:47 0.503
field13713 40 00:01:54 00:04:15 0.448
GB63_dither_test OJ 228 00:10:52 00:27:06 0.401
GB63_dither OJ 48 00:02:17 00:04:32 0.503
GB62_dither OJ 48 00:02:17 00:04:43 0.484
GB61_dither_test OJ 100 00:04:46 00:11:06 0.429
GB61_dither OJ 48 00:02:17 00:04:35 0.498
GB60_dither OJ 48 00:02:17 00:04:35 0.498
GB59_dither OJ 48 00:02:17 00:04:32 0.503
GB58_dither OJ 48 00:02:17 00:04:32 0.503
GB57_dither OJ 48 00:02:17 00:04:35 0.498
GB74_dither OJ 48 00:02:17 00:04:35 0.498
GB75_dither OJ 48 00:02:17 00:04:32 0.503
GB76_dither OJ 48 00:02:17 00:04:32 0.503
GB77_dither OJ 48 00:02:17 00:04:38 0.493
GB78_dither OJ 48 00:02:17 00:04:38 0.493
GB79_dither OJ 48 00:02:17 00:04:35 0.498
GB80_dither OJ 48 00:02:17 00:04:32 0.503
GB97_dither OJ 48 00:02:17 00:04:35 0.498
GB96_dither OJ 48 00:02:17 00:04:38 0.493
GB95_dither OJ 48 00:02:17 00:04:35 0.498
GB94_dither OJ 48 00:02:17 00:04:38 0.493
GB93_dither OJ 48 00:02:17 00:04:32 0.503
GB92_dither OJ 48 00:02:17 00:04:38 0.493
GB91_dither OJ 48 00:02:17 00:04:35 0.498
GB108_dither OJ 48 00:02:17 00:04:38 0.493
GB109_dither OJ 48 00:02:17 00:04:32 0.503
GB110_dither OJ 48 00:02:17 00:04:35 0.498
GB111_dither OJ 48 00:02:17 00:04:35 0.498
GB112_dither OJ 48 00:02:17 00:04:38 0.493
GB113_dither OJ 48 00:02:17 00:04:32 0.503
GB114_dither OJ 48 00:02:17 00:04:32 0.503
GB131_dither OJ 44 00:02:05 00:04:28 0.468










Stats so far in 2025
Monthly observed fraction so far in 2025
Month Observed Time
(hh:mm:ss) 		Expected Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Jan 103:35:29 259:42:08 0.399
Feb 53:54:42 259:20:18 0.208
Mar 158:57:47 319:07:20 0.498
Apr 66:18:05 165:47:42 0.400

Observed time so far in 2025
- Total time of each institute is calculated by the following
    [All observation time in 2025] = [Observed time so far] + [Remaining time in the future]
    [Remaining time in the future] = [Clear sky fraction] x [Remaining night time (Sun alt. < -10°)]
    
    [GB observation time in 2025] = [Observed GB time so far] + [Remaining GB time in the future]
    [Remaining GB time in the future] = [Clear sky fraction] x [Remaining GB night time (Sun alt. < -10° & GB alt. > 22°)]
    
    [Non-GB observation time in 2025] = [All observation time in 2025] - [GB observation time in 2025]
    
    [OU, NASA, ABC time in 2025] = 0.24 x [Non-GB observation time in 2025]
    [SAAO time in 2025] = 0.28 x [Non-GB observation time in 2025]
    
- ALLSKY time is equally distributed to each institute
- ToO time is distributed to each institute based on input of observer of each date
- Clear sky fraction of (0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5) is assumed for (Jan, ..., Dec) in the calculation of the remaining observation time
All
(hh:mm:ss) 		GB
(hh:mm:ss) 		Non-GB
(hh:mm:ss) 		SAAO
(hh:mm:ss) 		OU
(hh:mm:ss) 		NASA
(hh:mm:ss) 		ABC
(hh:mm:ss) 		CALIB
(hh:mm:ss)
Total 1769:41:15 898:26:35 871:14:39 243:56:54 209:05:54 209:05:54 209:05:54 116:03:07
Observed 382:46:01
(21.63%)		 121:01:24
(13.47%)		 261:44:37
(30.04%)		 34:15:15
(14.04%)		 64:07:04
(30.66%)		 132:59:37
(63.60%)		 30:22:40
(14.53%)		 116:03:07
(N/A)
Remaining 1386:55:13
(78.37%)		 777:25:11
(86.53%)		 609:30:01
(69.96%)		 209:41:38
(85.96%)		 144:58:50
(69.34%)		 76:06:17
(36.40%)		 178:43:14
(85.47%)		 00:00:00
(N/A)











Camera status (2025/04/15)



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